diff --git a/pkgs/development/compilers/llvm/7/libc++abi.nix b/pkgs/development/compilers/llvm/7/libc++abi.nix
index b5e6e0e70480..522c8d1a163b 100644
--- a/pkgs/development/compilers/llvm/7/libc++abi.nix
+++ b/pkgs/development/compilers/llvm/7/libc++abi.nix
@@ -1,4 +1,4 @@
-{ stdenv, cmake, fetch, libcxx, libunwind, llvm, version }:
+{ stdenv, cmake, fetch, libcxx, llvm, version }:
 
 stdenv.mkDerivation {
   pname = "libc++abi";
@@ -7,7 +7,6 @@ stdenv.mkDerivation {
   src = fetch "libcxxabi" "1zcqxsdjhawgz1cvpk07y3jl6fg9p3ay4nl69zsirqb2ghgyhhb2";
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) libunwind;
 
   postUnpack = ''
     unpackFile ${libcxx.src}